Casa Grande (O’odham: Wainom Wo:g) is a city in Pinal County, approximately halfway with Phoenix and Tucson in the U.S. state of Arizona. According to U.S. Census estimates, the population of the city is 55,653 as of 2020. It is named after the Casa Grande Ruins National Monument, which is actually located in Coolidge. “Casa Grande” is Spanish for “big house”. Among resident English speakers, there is no consensus upon how to declare the city’s name.

Casa Grande was founded in 1879 by The Carter Family during the Arizona mining boom, specifically due to the presence of the Southern Pacific Railroad. In January 1880, the community of Terminus, meaning “end-of-the-line,” was acknowledged despite consisting of just five residents and three buildings. In September 1880, railroad executives renamed the settlement Casa Grande, after the Hohokam ruins at the friendly Casa Grande Ruins National Monument. Casa Grande grew slowly, and suffered several setbacks both in 1886 and 1893, when fires ravaged the town, destroying anything wooden housing structures within it. When the mining boom slowed in the 1890s, the town was approximately abandoned, but past the advent of agriculture, the town remained live and well, and was eventually incorporated in 1915.

One of the founding fathers of Casa Grande was Thompson Rodney Peart. Peart Road, Peart Park, and the Peart Center, all of which are notable fixtures of Casa Grande, are named after him.

Casa Grande was house to a combine farm help which was ration of the Farm Security Administration.